Hewlett Harbor (NY) monthly weather averages

Contents

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Hewlett Harbor

Hewlett Harbor average temperature chart (Celsius) Hewlett Harbor average temperature chart (Fahrenheit)
Average monthly temperatures in Hewlett Harbor (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 3 4.2 8.9 14.6 19.8 25 28.1 27.6 23.7 17.9 12 5.9
°F 37.5 39.6 47.9 58.3 67.7 77 82.6 81.6 74.7 64.3 53.6 42.6

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Hewlett Harbor monthly rainfall chart (mm) Hewlett Harbor monthly rainfall chart (inches)
Average monthly rainfall in Hewlett Harbor (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 84 79 95 100 99 91 99 92 85 76 96 91
inches 3.3 3.1 3.7 3.9 3.9 3.6 3.9 3.6 3.4 3 3.8 3.6
Rainy days 10 10 11 11 11 10 9 9 8 7 10 11

Average annual rainfall in Hewlett Harbor: 1052.533mm (414.4 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Hewlett Harbor

Hewlett Harbor average daily sunshine chart
Average daily sunshine Hewlett Harbor
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.9 6.5 7.5 8.2 8.9 9.3 9.3 9.2 7.9 7.5 5.6 5.1

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Hewlett Harbor average minimum / maximum temperatures (Celsius) Hewlett Harbor average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Hewlett Harbor (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -4 -3.2 1 5.8 11.2 16.4 19.9 19.5 15.5 9.5 4.6 -0.9
Max °C 3.2 4.4 9.1 14.8 20.1 25.2 28.3 27.8 23.9 18.2 12.2 6.1
Min °F 24.8 26.2 33.7 42.4 52.1 61.5 67.8 67 59.9 49 40.3 30.5
Max °F 31.3 33.1 41 50.5 60.1 69.4 75.4 74.5 67.5 56.8 47.1 36.7

Sea temperature

The graph below shows the average sea temperature.

Hewlett Harbor average sea temperature chart (Celsius) Hewlett Harbor average sea temperature chart (Fahrenheit)
Average sea temperature around Hewlett Harbor in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 6.8 4.9 4.8 6.9 11.2 17 21.8 22.8 20.6 16.8 12.9 9.6
°F 44.2 40.8 40.6 44.4 52.2 62.5 71.3 73 69.1 62.3 55.2 49.2

Wind speed

The graph below shows the average wind speed.

Hewlett Harbor average winspeed by month (km/h) Hewlett Harbor average winspeed by month (mph)
Average wind speed in Hewlett Harbor (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 22 22 22 22 19 18 17 17 17 18 20 21
mph 14 14 14 14 12 11 11 10 11 11 13 13

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Hewlett Harbor relative humidity averages
Average relative humidity in Hewlett Harbor
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
65% 64% 63% 63% 68% 70% 70% 71% 71% 69% 68% 66%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Hewlett Harbor weather stats

Hewlett Harbor weather statistics
Hottest month: July 28.1°C 82.6°F
Driest month: October 76mm 3ins
Sunniest month: August 9.2hrs
Coldest month: January 3°C 37.4°F
Wettest month: April 100mm 3.9ins
Warmest sea: August 22.8°C 73°F
Map showing location of Hewlett Harbor (40.63621, -73.68152) Hewlett Harbor map pin © Google

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